@Wedge98 - Either will work just fine. The video signal is only a few miliamperes. I would probably opt for the 2Amp unit just because it gives me more room to solder the wires down.

@Ommadawn - This is a bit different than the Oracle system. It switches based on signal strength, not video quality. However, it stands to reason that better video quality follows better signal strength. The good thing about this system is that there is barely any interpretation in the diversity controller.

@barok - Circuit board pictures are coming. I'm out of town for the week. I will take a few pictures when I get back.

cmulder - Use a solid state relay or a video switch. I chose a relay since it's life is well beyond what I'll ever use. It also give the best video quality with the least distortion.

The system works very well for me. I have a Comtech modules, which the RSSI voltage is proportional to the log of the signal strength and drops near zero at no signal. It really works great with this. I have dropped my potentiometer to about half for best performance.

For the inverted signal, the switching is a little harder to tweak and in most cases you'll run the potentiometer all the way up to max resistance or you can just cut it out of the circuit all together. This means it will switch a little more often, that's all. It won't affect performance. However, you can change the direction of the signal and get a non inverting RSSI signal by using an LF412 OpAmp and an extra battery (the LF412 requires a negative voltage to work). What you need is to place the LF412 in the inverting buffer configuration (the exact same as the LM358 buffer, but you just reverse the inputs at the inverting and non inverting terminals). Then you need to place a fixed voltage on the LM358 buffer to act as an adder to get the signal positive voltage. You can use the 5V from the voltage regulator for this and a 10 K resistor on the 5V and the output of the LF412 to make the adder. In my opinion, I'd just use video switch in place of the relay instead and turn the potentiometer all the way up.

If someone wants the signal inverter circuit described above, I can draw it up.

Perhaps MartinY can recommend a video switch IC which will work in place of the relay? It sure as heck would be easier than building the signal inverter. I would think the ba7654 would work fine. Rohm.com sells them. The TS5a4624 from Texas Instruments would also work.